TAC Research Bulletin

The TAC Research Bulletin highlights recently-published reports and articles from around the world with relevance to road transportation in Canada. Full text links are included, so you get more than just the abstract.

E.g., 10/04/2022
E.g., 10/04/2022
Monday, July 25, 2022 - 15:45
The Florida low profile barrier—consisting of multiple interconnected portable concrete segments—is typically utilized in construction zones to separate traffic from construction activities. The original development and validation (crash testing) of the barrier were in accordance with applicable standards at the time (NCHRP Report 350). In the...
Monday, July 11, 2022 - 18:30
The research aimed to identify and recommend designs of quick build protective measures for cycleways for introduction in Aotearoa New Zealand. The pros and cons of different forms of infrastructure for safe, quick build cycleways were laid out. The full report is available from the New Zealand Transport Agency web site at https://www.nzta.govt.nz/resources/...
Monday, July 11, 2022 - 18:15
Road crashes kill over 1.3 million people every year worldwide and seriously injure millions more. A Safe System approach to road safety can drastically reduce road deaths – but how can it actually be put in place? This report provides experience-based guidance on implementing the Safe System approach. The repor an supporting case studies are available on...
Monday, July 11, 2022 - 18:15
This report contains the collection of case studies related to in-place recycling with cement, emulsion or foamed bitumen, hot mix and cement concrete recycling in a plant. The current collection of case studies is part of a set of three publications on the “Use of Recycled Materials in Pavements” expected for the 2020-2023 cycle. This report can...
Monday, July 11, 2022 - 18:00
PIARC's Technical Committee 1.5 - Disaster Management, has established a task related to the Use of Big Data and Social Networks for Disaster Management. This task considers new information evolutions such as big data and social networks. It involves an international literature review, collection and analysis of case studies and engagement with worldwide...
Monday, July 11, 2022 - 18:00
Cloud connected road users (CCRUs) are travellers utilising information from portable and fixed in-vehicle devices to assist with trip planning, and warning and advice when travelling. This report examines various cloud connected road user data provision methods and practices in the EU, USA, Australia, and New Zealand to offer agencies guidance on how to manage...
Monday, July 11, 2022 - 17:45
Climate change is exacerbating weather-related impacts on the transportation system. As floods, droughts, wildfires and other extreme weather events become more common and destructive, transportation infrastructure will need to adapt to become more resilient. To better understand how climate change will impact Minnesota’s transportation system and to...
Monday, July 11, 2022 - 17:45
The present article aims to identify critical roads on a macroscopic road network by the road characteristics and traffic parameters on the operability of the whole network; such as length, distance from the centre, speed, number of lanes, and number of connectors. This can provide a useful tool to have more understanding of which road characteristics have a...
Monday, July 11, 2022 - 17:45
Superloads (SLs) are a class of vehicles that typically exceed both gross vehicle weight limits and axle load limits, in addition to occupying two or more lanes of traffic. In PA, SLs require special permits but their effect on pavement distresses have not been evaluated. In this study, lab and computational analyses were combined to quantify the effect of SLs...
Monday, July 11, 2022 - 17:30
The objectives of this research are to address the following questions:  1) How will new non-auto mobility options (electric bicycles and other no-/low-power vehicles) impact speed dynamics on non-auto facilities and interactions among non-auto travellers? How are the speeds of vehicles and the perceptions of comfort for non-auto travellers influenced by...
Monday, July 11, 2022 - 17:30
Increased urbanization, population growth, and demand for time-sensitive deliveries means increased freight movement in cities, which contributes to emissions, noise, and safety concerns. One innovative mode gaining widespread attention for urban deliveries is cargo cycles—bicycles adapted for freight delivery. Despite the recognized potential and...
Tuesday, June 14, 2022 - 20:45
Little is known about how driving performance and attention change over time with increased automation. The current study assessed the effect of varying levels of vehicle automation on driver performance over time. Participants gained experience with advanced driver assistance systems (ADAS) across four sessions in the driving simulator. The specific driver...

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